T接输电线路故障精确定位方法研究  

Research on Fault Location Method of T-connected Power Transmission Line

作　　者：周超凡 鄢发齐[1] 周良松[2] 姚占东[2] 沈宇亮[2] Zhou Chaofan;Yan Faqi;Zhou Liangsong;Yao Zhandong;Shen Yuliang(Central China Branch of State Grid Corporation of China Dispatching and Control Centre,Wuhan Hubei 430077,China;College of Electricaland Electronic Engineering, Huazhong University of Science and Technology,Wuhan Hubei 430077,China)

机构地区：[1]国家电网公司华中电力调控分中心,湖北武汉430077 [2]华中科技大学电气与电子工程学院,湖北武汉430074

出　　处：《湖北电力》2017年第7期21-26,51,共7页Hubei Electric Power

摘　　要：随着电力系统的发展和负荷密度的增长,高压电网中越来越多地出现了T型(三端)输电线路,T接输电线路故障定位对于电力系统安全运行有着重要意义,但是传统的阻抗法与行波法两种故障测距技术应用于T接输电线路时各有不足。因此依照先实现故障支路判别、再实现故障点的精确定位的思路,研究了T接输电线路三端电流相位差动原理、故障支路判别方法和故障点精确定位方法,实现了T接输电线路故障的精确定位。With the development of electric power system and the growth of the load density,more and more T-connected（three terminal） transmission lines has appeared in high voltage powergrid.Fault location of T-connected transmission line is important for the safe operation of power sys-tem, but the traditional impedance method andtravelling wave location method used for fault location have shortcomings when applied in fault location of T-connected transmission line. In this pa-per, first the fault branch is identified, then the fault pointis precisely located. Based on this method, the principle of three-terminal current phase difference of T-connected transmission line, method of fault branch identification method and fault location positioning method are investigated inthis paper, and the fault location of T-connected transmission line is realized.

关 键 词：T接输电线路 故障 定位 

分 类 号：TM726.3[电气工程—电力系统及自动化]